SOHC.co.uk Forums > CB350/400
Rear swing arm - interesting pivot bushes - plastic?
McCabe-Thiele (Ted):
--- Quote from: Bryanj on July 24, 2021, 05:29:37 PM ---Original are a type of plastic and use a seperate "top hat" thrust washer. You can happily replace with brass ones.
BE CAREFULL the collar wears more than the bushes and costs a lot, last i saw were over £80
--- End quote ---
Not sure what you mean by a top hat washer - mine just had a sort of oil seal at each end?
Bryanj:
The bush ought to be a tight fit in the swingarm, then a felt sealing washer, then a shaped phenolic piece where one bit goes into the swingarm with a bigger diameter that acts as a side thrust for the swingarm then a shaped steel cup washer. If the bushes pulled out easy they were either the wrong ones or badly fitted by a po, normally you have to destry them to get them out
Nurse Julie:
--- Quote from: Macabethiele (Ted) on July 24, 2021, 05:59:05 PM ---The old ones pulled out with my fingers!
Do you sell a better option PM me when you can if you do.
--- End quote ---
These are the ones I sell and what we fit to all our own bikes Ted. I will PM you later or tomorrow.
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McCabe-Thiele (Ted):
--- Quote from: Bryanj on July 24, 2021, 06:33:15 PM ---The bush ought to be a tight fit in the swingarm, then a felt sealing washer, then a shaped phenolic piece where one bit goes into the swingarm with a bigger diameter that acts as a side thrust for the swingarm then a shaped steel cup washer. If the bushes pulled out easy they were either the wrong ones or badly fitted by a po, normally you have to destry them to get them out
--- End quote ---
When I looked at my swing arm I said to myself - oh no Ted not another end float problem.
The rear swing arm has definitely been out before by a PO as it all came apart far too easily & the grease nipple was too big & had snapped off - I managed to get the broken part out okay.
The parts manual just shows the bushes & an oil seal on each side - no cup washers etc. Hopefully NJ's Brass bushes might fix things up my seals looked in fair shape - tbh I would have preferred some decent copper spacers or thrust washers on either side arrangement. To be continued..................................
Bryanj:
The flange part of the brass bush acts as the side thrust face for the swing arm.
I was quoting the assembly for the 500/550/750 and having had time to look at cmsnl the 400 pic is different with the thrust part of the bush, still should be a very tight fit in the arm though.
Freeze the bushes before fitting
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